Saudi Arabia's energy infrastructure has become a direct target in the widening Yemen conflict, and the consequences are already visible in oil markets and airline cost sheets. Since mid-July 2026, Yemeni Houthi forces have conducted a sustained campaign of drone and missile strikes against Saudi airports, oil facilities, and maritime targets, escalating in September to a direct hit on the Kingdom's critical East-West Pipeline. For an aviation sector still recovering from the jet fuel shortages triggered earlier this year by the broader Iran conflict, this is a second, compounding shock.
A rapidly escalating campaign
Osprey Flight Solutions has been tracking a clear escalation pattern since early July 2026, issuing a steady run of critical alerts as the campaign has developed. In mid-July, Saudi-led coalition (SLC) air defences downed Houthi ballistic missiles over the Kingdom's southwest provinces, following strikes by Yemeni government forces on Sanaa International Airport intended to block an Iranian delegation flight. The Houthis vowed retaliation, and delivered on it.
Through late July and August, Osprey recorded repeated Houthi drone and missile attacks against oil facilities and airports in southwest Saudi Arabia, alongside strikes on commercial vessels and oil infrastructure near Yanbu on the Red Sea coast. Saudi air defences intercepted a significant share of these launches, but not all of them.
The conflict reached a new threshold in mid-September, when an Iraqi Iranian-backed militant group (IBMG) drone attack reportedly conducted with Yemeni Houthi support struck Saudi Arabia's East-West Pipeline, a 1,200-kilometre corridor that allows the Kingdom to move crude to the export terminal at Yanbu without transiting the Strait of Hormuz. Days later, the Saudi-led coalition confirmed a further wave of ballistic missile and drone attacks on several Saudi cities near the Yemeni border, with Osprey's alert reporting casualties and damage to civilian property. Osprey's analysis also links IBMGs operating from Iraq to recent strikes on Saudi oil infrastructure, with Houthi personnel reportedly providing operational support from Iraqi territory.
Direct pressure on oil supply
The East-West Pipeline strike is the most consequential development for global energy markets to date. The pipeline exists specifically to bypass the Strait of Hormuz, a maritime chokepoint that has already been effectively closed for much of 2026 amid the wider Iran conflict. Saudi authorities have not given an official damage assessment or repair timeline, describing the closure only as a "precautionary measure"; independent estimates vary, with some analysts expecting disruption to last around a month and Aramco separately telling some customers it cannot guarantee deliveries through mid-November. Reuters reporting also confirms Saudi Arabia has informed European customers that some September crude cargo deliveries are cancelled.
Brent crude has responded accordingly. CNBC reported that oil prices climbed more than 8 percent in September as the United States and Iran exchanged military strikes for the first time since July, a broadening of the conflict that coincided with the Houthi campaign against Saudi energy facilities. Following the pipeline attack specifically, Brent advanced close to 3 percent in a single session to settle above 108 dollars a barrel, taking the month's gains past 20 percent. Goldman Sachs has said Brent could climb past 120 dollars a barrel in 2027 if Gulf crude output remains around four million barrels per day below prewar levels, citing intensified shipping attacks in the Strait of Hormuz and the Red Sea as the most likely driver, though it stressed this is not the bank's base case.
Repeated strikes near Jizan, home to a 400,000 barrel-per-day refinery, add a further layer of concern for markets tracking regional refining capacity, per World Oil's reporting on the attacks. In response to this pattern, Osprey has also raised its airspace risk rating for southwest Saudi Arabia and the Red Sea region to High at all altitudes.
Compounding an already fragile jet fuel market
This escalation lands on a market with almost no spare capacity to absorb it. Earlier in 2026, the International Energy Agency's director, Fatih Birol, told the Associated Press that Europe held roughly six weeks of remaining jet fuel supply, describing the situation as the global economy's largest energy crisis. Jet fuel had traded at a relatively stable baseline of around 85 to 90 dollars a barrel before the February hostilities began, then surged past 150 to 200 dollars a barrel by mid-April.
Airlines did not absorb those costs quietly. KLM cut flights and pointed directly to rising kerosene costs, while easyJet projected a pretax loss of up to roughly 758 million dollars for the first half of its 2026 fiscal year, according to PBS NewsHour reporting. Jet fuel is not a marginal cost for carriers. Per the International Air Transport Association, it typically accounts for around 30 percent of total airline operating expenses, so sustained price increases translate quickly into route cancellations, surcharges, and fare rises.
The structural picture makes this worse, not better. Independent of the current conflict, the US Energy Information Administration had already forecast that 2026 jet fuel supply would fall to just 21 days, the lowest level since 1963, following the permanent closure or conversion of more than 1.2 million barrels per day of US refining capacity since 2019. That structural tightness will not resolve even if the conflict ends. It means the market has minimal buffer left to absorb any further supply shock, and the East-West Pipeline strike and renewed Jizan refinery attacks are exactly that.
It is worth noting that reporting on the jet fuel situation has not been uniform. Some private aviation operators told Fortune in June that they had seen no supply disruption at the airports they served, even as they acknowledged higher prices. The picture through the summer was therefore one of acute regional tightness and price volatility rather than a uniform global shortage. The trajectory through September, however, points toward renewed strain rather than relief.
What this means for flight operations
For operators planning schedules to, from, or over Saudi Arabia, Yemen, and the wider Red Sea region, the risk is not confined to fuel economics. Osprey's advisories throughout this campaign have consistently flagged operational concerns spanning unannounced missile and drone launches that pose a latent hazard to aircraft at all altitudes, airspace congestion from increased military air activity, and the potential for further NOTAM-driven airport closures near the Yemeni border.
Operators should treat the following as standing precautions while the situation remains fluid:
- Conduct operational risk-based identification of divert and alternate airports for any flight schedule touching Saudi Arabian aerodromes or airspace.
- Ensure flight plans, special approvals, and overflight permits are current before departure, particularly for sensitive southwestern provinces.
- Monitor airport and airspace NOTAMs, bulletins, and advisories closely, given the Kingdom's history of limited advance notice on military activity.
- Track fuel cost exposure separately from operational risk. The two are now moving in tandem, but they require different mitigation strategies.
Outlook
Osprey's most recent forecast assessed it likely, at 70 percent probability, that the Houthis would continue drone and missile launches against Saudi aviation, maritime, and oil sector targets over the following six weeks. The subsequent East-West Pipeline strike and the mid-September attacks are consistent with that trajectory. A resumption of SLC and US strikes against Houthi and Iraqi IBMG targets in Yemen and Iraq remains a realistic possibility, which would extend the cycle of retaliation rather than close it, and Osprey's elevated risk rating for the region is likely to hold for as long as that continues.
For the oil market, the question is no longer whether Gulf supply disruption continues, but how much additional capacity it removes and for how long. For the aviation sector, an already historically tight jet fuel market has little room left to absorb another supply shock. Operators should plan for continued volatility in both fuel cost and regional airspace risk through the remainder of the short-term outlook window.
This analysis draws on Osprey Flight Solutions analyst updates and forecasts published between early July and mid-September 2026, alongside external market reporting current as of publication. Given the pace of developments, verify the latest position against live Osprey advisories and NOTAMs before making operational decisions.
Sources referenced:
- Osprey Flight Solutions analyst updates and forecasts, early July–mid-September 2026
- CNBC, "Oil rises to $99 on report Iran launched second undisclosed attack on U.S. Navy ships," 8 September 2026
- CNBC, "U.S. oil tops $105 as Saudi Arabia reportedly cancels some crude cargoes after pipeline closure," 15 September 2026
- Reuters (via BOE Report), "Saudi cancels some oil cargoes after pipeline hit, top buyer chasing alternatives," 15 September 2026
- CNN Business, "Saudi Arabia has shut the East-West crude oil pipeline. Why does this matter?," 14 September 2026
- World Oil, "Saudi Arabia halts energy operations after Houthi attacks," 8 September 2026
- PBS NewsHour, "What lagging jet fuel supplies could mean for airlines and travelers," 17 April 2026
- TimeTrex, "The 2026 Global Jet Fuel Crisis," 23 April 2026
- Fortune, "The jet fuel crisis never existed, sources say," 16 June 2026
- DWU Consulting, "US Jet Fuel Supply 2026: Refinery Constraints & Tightness," 14 July 2026